Character Analysis
Mama Corleone (Morgana King) doesn't play a huge role in the movie. She dances with Vito and sings during the opening wedding sequence, and appears a few other times, but she's not really a factor in the rest of the story. The family business is pretty strongly centered on men, who tend to try to keep their wives out of it.
Michael does this with Kay, for instance, lying to her about ordering Carlo's murder, and Vito wants the undertaker to make sure that Sonny's bullet-riddled corpse doesn't look so obviously bullet-riddled when Mama Corleone sees it at the funeral.